<template>
    <header id="head_top">
      <slot name="logo"></slot>
      <slot name="search"></slot>
      <slot name="me"></slot>
      <section class="head_goback" v-if="goBack" @click="$router.go(-1)">
        <svg width="100%" height="100%" xmlns="http://www.w3.org/2000/svg" version="1.1">
          <polyline points="12,18 4,9 12,0" style="fill:none;stroke:rgb(255,255,255);stroke-width:2"/>
        </svg>
      </section>
      <router-link :to="userInfo? '/profile':'/login'" v-if="signinUp" class="head_login">
        <svg class="user_avatar" v-if="userInfo">
          <use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#user"></use>
        </svg>
        <span class="login_span" v-else>登陆|注册</span>
      </router-link>
      <section class="title_head ellipsis" v-if="headTitle">
        <span class="title_text">{{headTitle}}</span>
      </section>
      <slot name="changeLogin"></slot>
    </header>
</template>

<script>
  import {mapState,mapActions} from 'vuex';
  export default {
      data(){
          return {
          }
      },
    created(){
      //获取用户信息
      this.getUserInfo();
    },
      components:{

      },
    mounted(){

    },
    props:['signinUp','headTitle','goBack'],
    computed:{
      ...mapState([
          'userInfo'
      ]),
    },
    methods:{
      ...mapActions([
          'getUserInfo'
      ]),

    }
  }
</script>

<style lang="scss" scoped="">
  @import "../../assets/styles/mixin.scss";

  #head_top{
    background-color:$red;
    position: fixed;
    z-index: 100;
    left:0;
    top:0;
    @include wh(100%,1.95rem);
  }

  .head_goback{
    left: 0.4rem;
    @include wh(0.6rem,0.8rem);
    line-height:2.2rem;
    margin-left:0.4rem ;
  }

  .head_login{
    left:0.55rem;
    @include sc(0.65rem,#fff);
    @include ct;
    .login_span{
      color: #fff;
    }
    .user_avatar{
      fill: #fff;
      @include wh(.8rem, .8rem);
    }
  }

  .title_head{
    @include center;
    width:50%;
    color: #fff;
    text-align: center;
    .title_text{
      @include sc(0.8rem,#fff);
      text-align: center;
      font-weight: bold;
    }
  }
</style>

